您即將從本網站離開,並前往https://books.google.com.tw/books?id=snI8SW81K-MC&pg=PR15&lpg=PR15&dq=ball&source=bl&ots=KwZWrh1IrJ&sig=ACfU3U1sygno44nPzyFa_1Ej8d0Y7W_7HQ&hl=zh-TW&sa=X&ved=2ahUKEwiFmaGek9_8AhU3I0QIHSf6BeEQ6AF6BQjaAhAD